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A wheel starts from rest and acquires a...

A wheel starts from rest and acquires an angular velocity of `60 rad//s` in half a minute . Then its angular acceleration is

A

`4 " rad "s^(-2)`

B

`2 "rad "s^(-2)`

C

`1 " rad "s^(-2)`

D

`0.5 " rad "s^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`alpha = (omega - omega_(0))/t `
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NARAYNA-SYSTEM OF PARTICLES AND ROTATIONAL MOTION -EXERCISE - I (C.W)
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  2. A body rotates about a fixed axis with an angular acceleration of 3 ra...

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  4. Two moving particles P and Q are 10 apart at any point . Velocity o...

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  17. Three particles of masses 1gm, 2gm & 3gm are at 1cm, 2cm & 3cm from th...

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  18. The radius of gyration of body is 18cm when it is rotating about an ax...

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  19. The position of axis of rotation of a body is changed so that its mome...

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  20. The diameter of a fly wheel is R. Its coefficient of linear expansion ...

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